Nipple-holder



(No Model.)

J. F. GUTHRIE, Jr.

NIPPLE HOLDER.

No. 406,834. Patented Ju ly 9,1889.

W ESEES.

UNITED STATES PATENT OFFICE.

JAMES F. GUTHRIE, JR, OF SOMERVILLE, ASSIGNOR TO THOMAS 0. ASHLEY, OFBOSTON, AND GEORGE H. GRAVES, OF MALDEN, MASSACHUSETTS.

NIPPLE-HOLDER.

SPECIFICATION forming part of Letters Patent No. 406,834, dated July 9,1889.

Application filed August 23, 1888. Serial No. 283,537. (No model.)

To all whom it may concern.-

Be it known that 1, JAMES F. GUTHRIE, J12, of Somerville, in the countyof MiddleseX and State of Massachusetts, have invented a new andusefulNipple-I'Iolder, of which the following is a specification,reference being had to the accompanying drawings, in which Figure 1 is alongitudinal central section, and Figs. 2 and 4 are end views, of aholder embodying my invention. Fig. 3 is a section on line 3 3 ofFig. 1. Fig. 5 shows my device applied to a nipple whose inner end issquare, and Fig.6 shows it applied to a nip ple whose inner end is cutatan angle to its longitudinal axis.

My invention is a nipple-holder.

In the drawings, which show my invention embodied in the best way nowknown to me, holder A is chambered at a, the mouth of chamber a beinginteriorly threaded at a. Chamber at contains the preferred means forgripping the end of the pipe or nipple P, and these preferred meansconsist of a sliding plate or holder A, provided with teeth a and aset-screw A mounted in holder A. The pipe P to be operated on is securedin the mouth of chamber a and held longitudinally by the thread a.Holder A is then set up against the inner end of the pipe, so as toforce the teeth in the plate into theend of the pipe and to hold it fromturning on its axis, the plate being held from turning, say, by ribs 0.on the inner wall of the chamber entering grooves a in the periphery ofthe plate.

A die is applied to the outer end of the nipple and the desired threadcut in a way that will be readily understood by all skilled in the artwithout further description, holder A being secured, say, in a visewhile the die is operated.

A feature of my construction consists in making the holder so that itwill adjustitself to the inner end of the nipple or pipe when the end isnot square, (see Fig. 6,) and this is readily. accomplished by makingthe plate of somewhat less diameter than the interior of the chamber andby rounding the inner end of the set-screw and forming the opposedsurface of the plate with the concavity a, as

shown.

what I claim is- Holder A, having a chamber (I, provided with interiorthreads a, in combination with ber a, and means; substantially such asdescribedfor example, a set-screw A to force the toothed holder A intoengagement with the article to be operated on,substantially as and forthe purpose set forth.

JAMES F. GUTHRIF, JR.

Vitnesses:

EDWARD S. BEACH, JOHN R. Snow.

